The broad shoulders on the male dwarves are fine but the narrow waist ruins the overall proportions. They should be thick set, sturdy and not like some gym bunny who neglected his legs. Legs could also be a little longer.
Hmm, personally I’d go for making the male dwarf chest and possibly shoulders a bit narrower rather than waist wider, and still think they’d look pretty stocky. But making the waist wider would be a valid alternative option for bringing the torso into proportion, though I think you’re right that in that case the legs would need to be a bit longer as well as chunkier. And even then I’d reduce the chest distension as Niara suggested so it didn’t look quite as much as though they’ve always just taken a huge breath in.